SparkFun RTK Express Plus - GPS-18590 - SparkFun Electronics
GitHub - sparkfun/SAMD21_Pro_RF: The SparkFun Pro RF is a LoRa®-enabled wireless board that marries a SAMD21 and a long-range RFM95W to make a compact and easy-to-use IoT Arduino board.
How to Build a Basic Radio with an Arduino Uno the SparkFun FM Tuner Basic Breakout | Arduino | Maker Pro
2- XBee S6B Radio Modules/USB Sparkfun.com Brd. Serial Communication Over WIFI | eBay
Amazon.com: SparkFun Simultaneous RFID Reader - M6E Nano Long distance UHF sensor shield Write tags at 80msec standard Read up to 150 tags/sec to 96-bit EPC : Electronics